Projects per year
Abstract
We studied the effects of ZnO nanoparticles [ZnO NPs, primary particle size 35 10 nm (circular diameter, TEM)], bulk [160 +/- 81 nm (circular diameter, TEM)], and Zn ions (from ZnCl2) on mortality, growth, and reproductive endpoints in the sediment dwelling marine amphipod Corophium volutator over a complete lifecycle (100 days). ZnO NPs were characterized by size, aggregation, morphology, dissolution, and surface properties. ZnO NPs underwent aggregation and partial dissolution in the seawater exposure medium, resulting in a size distribution that ranged in size from discrete nanoparticles to the largest aggregate of several micrometers. Exposure via water to all forms of zinc in the range of 0.2-1.0 mg L-1 delayed growth and affected the reproductive outcome of the exposed populations. STEM-EDX analysis was used to characterize insoluble zinc precipitates (sphaerites) of high sulfur content, which accumulated in the hepatopancreas following exposures. The elemental composition of the sphaerites did not differ for ZnO NP, Zn2+, and bulk ZnO exposed organisms. These results provide an illustration of the comparable toxicity of Zn in bulk, soluble, and nanoscale forms on critical lifecycle parameters in a sediment dwelling organism.
Original language | English |
---|---|
Pages (from-to) | 1128-1135 |
Number of pages | 8 |
Journal | Environmental Science & Technology |
Volume | 46 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Jan 2012 |
Fingerprint
Dive into the research topics of 'Sequestration of Zinc from Zinc Oxide Nanoparticles and Life Cycle Effects in the Sediment Dweller Amphipod Corophium volutator'. Together they form a unique fingerprint.Projects
- 2 Finished
-
Manufactured nanoparticle bioavailability and environmental exposure (nanoBEE)
Lead, J. (Principal Investigator), Palmer, R. (Co-Investigator), Viant, M. (Co-Investigator) & Li, Z. (Co-Investigator)
Natural Environment Research Council
1/10/10 → 31/08/15
Project: Research Councils
-
Understanding the environmental behaviour and biological impacts of manufactured nanoparticles in natural aquatic systems
Lead, J. (Principal Investigator), Kendall, K. (Co-Investigator) & Preece, J. (Co-Investigator)
Natural Environment Research Council
1/04/06 → 30/11/10
Project: Research Councils